Laser ablation of metals and ceramics in picosecond–nanosecond pulsewidth in the presence of different ambient atmospheres

Kononenko, T. V.; Garnov, S. V.; Klimentov, S. M.; Konov, V. I.; Loubnin, E.N.; Dausinger, Friedrich; Raiber, A.; Taut, Christine

doi:10.1016/s0169-4332(96)00905-1

Cited by 59 publications

(17 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It is in good agreement with the results of literature 25,26 This could be explained by a shorter laser pulse duration compared to a typical time (of a few ps) of electron-phonon collisions in solid matter. Two different regimes of laser-target interaction could be defined as: 1) a fs regime, where a laser pulse terminates before the energy is completely redistributed in the solid matter 27, 28 is likely that the energy is deposited in the matter without laser I plasma interaction resulting in a better ablation efficiency than the one in the ps and ns regimes.…”

Section: Discussionsupporting

confidence: 92%

<title>Microablation of pure metals: laser plasma and crater investigations</title>

et al. 2001

View full text Add to dashboard Cite

Crater shapes and plasma plume expansion in the interaction of femtosecond (70 fs), picosecond (20 ps) and nanosecond (6 ns) laser pulses (wavelengths-800 nm; 400 nm and 266 nm for femtosecond Ti-Al203 laser ; 1064 nm, 532 nm and 266 nm for nanosecond and picosecond Nd-YAG lasers; mode-nearly TEM00; waist diameter-of the order of 1 0 jim) with various pure metals in air and noble gases at atmospheric pressure were studied. The craters formed at the surfaces were measured by an optical microscope profilometer with O.O1im depth and O.5im lateral resolutions. The measurements of laser plasma expansion were carried out with ICCD camera with 3 jim spatial and 1 ns temporal resolutions. These measurements were made in 0-100 ns time delay range and at different wavelengths in 200-850 nm optical spectral range. Laser ablation efficiencies, crater profiles, plasma plume shapes at different time delays, rates of plasma expansion in both longitudinal and transversal directions to the laser beam were obtained. Experimental results were analyzed from the point of view of different theoretical models of laser beam interaction with plasma and metals. The laser pulse duration range used in our study was of particular interest, as it includes the characteristic time of electron-phonon relaxation in solids, that is, of the order of one picosecond. Thus, we could study the different regimes of laser ablation without (for fs pulses) and with (for ns pulses) laser beam/plasma plume interaction. It was found that for nanosecond pulses the laser beam absorption, as well as its scattering and reflection in plasma, were the limiting factors for efficient laser ablation and precise material processing with sharply focused laser beams.

show abstract

Section: Discussionsupporting

confidence: 92%

<title>Microablation of pure metals: laser plasma and crater investigations</title>

et al. 2001

View full text Add to dashboard Cite

show abstract

“…Figure 3 shows the average ablation rate as a function of pulse energy and fluence. From this figure, we could confirmed the ablation threshold for fluence like as Kononenko's report [6]. Micro drilling for 100-µm thick SUS304 with 25 µJ/pulse (23J/(cm 2 pulse)), at least 570 shots required as shown in Fig.…”

Section: Introductionsupporting

confidence: 78%

Passively Q-switched Nd:YAG microchip laser over 1-MW peak output power for micro drilling

Taira

Matsuoka

Sakai

et al. 2006

2006 Conference on Lasers and Electro-Optics and 2006 Quantum Electronics and Laser Science Conference

View full text Add to dashboard Cite

show abstract

“…Due to its low thermal diffusion, short laser pulse, and high peak power during laser machining, it has been investigated by many researchers [6][7][8][9][10][11][12][13] , primarily on micro-holes drilling and experimental determination of the ablation rate. And advantages of picosecond pulses over nanosecond and longer pulses have been demonstrated in terms of higher achievable precision of the machining structures.…”

Section: Introductionmentioning

confidence: 99%

Picosecond laser machining of deep holes in silicon infiltrated silicon carbide ceramics

Zhang

Wang

Liu

et al. 2015

J. Wuhan Univ. Technol.-Mat. Sci. Edit.

View full text Add to dashboard Cite

Silicon infi ltrated silicon carbide (Si-SiC) ceramics, as high hardness materials, are diffi cult to machine, especially drilling micro-holes. In this study, the interaction of picosecond laser pulses (1 ps at 1 030 nm) with Si-SiC ceramics was investigated. Variations of the diameter and depth of circular holes with the growth of the laser energy density were obtained. The results indicate that the increase of machining depth follows a nonlinear relation with the increasing of laser energy density, while the diameter has little change with that. Moreover, it is found that some debris and particles are deposited around and inside the holes and waviness is in the entrance and at walls of the holes after laser processing.

show abstract

Laser ablation of metals and ceramics in picosecond–nanosecond pulsewidth in the presence of different ambient atmospheres

Cited by 59 publications

References 3 publications

<title>Microablation of pure metals: laser plasma and crater investigations</title>

<title>Microablation of pure metals: laser plasma and crater investigations</title>

Passively Q-switched Nd:YAG microchip laser over 1-MW peak output power for micro drilling

Picosecond laser machining of deep holes in silicon infiltrated silicon carbide ceramics

Contact Info

Product

Resources

About